Lamp base



FIG. 1 is a perspective view of the lamp base showing my new design;

FIG. 2 is a right side elevational view thereof on an enlarged scale;

FIG. 3 is an end elevational view thereof on an enlarged scale;

FIG. 4 is an opposite end elevational view thereof on an enlarged scale;and

FIG. 5 is a perspective view of a second embodiment of my new design,this embodiment being identical to the first except for the omission ofthe lighting fixture stanchion.

The ornamental design for a lamp base, as shown and described.